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<h1 class="topictitle1">生产存储扩容后，备份任务失败如何处理</h1>
<div><p>当VMware虚拟机所在的数据存储对应的LUN进行了扩容，您需要参考以下步骤在客户端所在主机上重新扫描该LUN，否则备份任务会失败。</p>
<div class="section"><h4 class="sectiontitle">操作步骤</h4><ol><li><span>使用PuTTY工具以<strong id="vmware_gud_0132__zh-cn_topic_0000002164790296_zh-cn_topic_0000002200031305_b916917212">root</strong>账户登录待安装客户端的主机。</span></li><li><span>执行以下命令，扫描LUN。</span><p><pre class="screen">for host in $(ls -1d /sys/class/scsi_host/*); do echo "- - -" &gt; ${host}/scan ; done</pre>
</p></li><li id="vmware_gud_0132__li14487152214719"><a name="vmware_gud_0132__li14487152214719"></a><a name="li14487152214719"></a><span>执行以下命令确认LUN的容量为扩容后的容量。</span><p><pre class="screen">fdisk -l</pre>
</p></li><li><span>重启客户端所在主机。</span><p><p>如果<a href="#vmware_gud_0132__li14487152214719">3</a>查询到LUN容量与实际不符时，才需要执行该步骤，重启后再执行<strong>fdisk -l</strong>查看。</p>
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